关键词: 早白垩世, 孢粉化石, 古气候, 暗色岩系, 浙闽地区

Abstract:

By quantitative analysis of spores and pollen from early Cretaceous dark mudstones from three typical sections in Zhejiang
and Fujian provinces, paleoclimate features of this area were obtained. Primary analysis of fossil spores and pollen shows that
Pinuspollenites, Podocarpidites, Celtispollenites, Ulmuspollenites are characterized in Shipu section, Pinuspollenites, Gleicheiniiidites,
Classopollis, Deltoidospora in Xiahuyuan section, Classopollis, Tracheid, Pinuspollenites, Podocarpidites in Chong'an section.
Quantitative analysis of fossil spores and pollen shows that there has been a humid subtropical climate with less climatic fluctuation in
Shipu, a humid-half humid subtropical climate with a short term of hot and dry climate in Xiahuyuan, half dry subtropical climate with
a few times of undulations between half-arid and half-humid climate in Chong'·an. In conclusion, this study infers a subtropical
paleoclimate with several undulations between half-arid and half-humid and it'·s more and more drought from east to west.

Key words: Early Cretaceous, fossil spores and pollen, paleoclimate, dark mudstone, Zhejiang and Fujian provinces